diff options
Diffstat (limited to 'sca-java-1.x/tags/1.6/modules/domain-search/src/main/java/org/apache/tuscany/sca/domain/search/DocumentMap.java')
-rw-r--r-- | sca-java-1.x/tags/1.6/modules/domain-search/src/main/java/org/apache/tuscany/sca/domain/search/DocumentMap.java | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6/modules/domain-search/src/main/java/org/apache/tuscany/sca/domain/search/DocumentMap.java b/sca-java-1.x/tags/1.6/modules/domain-search/src/main/java/org/apache/tuscany/sca/domain/search/DocumentMap.java new file mode 100644 index 0000000000..47deb41a6f --- /dev/null +++ b/sca-java-1.x/tags/1.6/modules/domain-search/src/main/java/org/apache/tuscany/sca/domain/search/DocumentMap.java @@ -0,0 +1,60 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.domain.search; + +import java.util.HashMap; + +import org.apache.tuscany.sca.domain.search.impl.Document; + +/** + * A map that holds a collection of {@link Document}s. Each {@link Document} key + * should ideally be something that is unique across the entire contribution + * documents. This class overrides {@link HashMap#get(Object)} method, so it + * adds an empty {@link Document} object if the specified key is not found in + * the map. + * + * @version $Rev$ $Date$ + */ +public class DocumentMap extends HashMap<Object, Document> { + + private static final long serialVersionUID = -2402910290314939928L; + + /** + * Returns a {@link Document} object mapped from the specified key. If no + * {@link Document} object is found from the specified key, a empty + * {@link Document} object is created and added to the map. + * + * @param key the {@link Document} key + * @return the {@link Document} object mapped from the key + */ + @Override + public Document get(Object key) { + Document doc = super.get(key); + + if (doc == null) { + doc = new Document(); + put(key, doc); + + } + + return doc; + + } + +} |